Gangetic Alluvial Plains: Uniqueness of the Aquifer System for Food Security and for Carbon Dioxide Sequestration
The various geophysical and exploratory-drilling investigations have indicated that the depth of the alluvial is variable from about 1000 m to over 2000 m and encompasses a number of aquifer zones, both fresh and saline. The increase in food production will evidently require more surface storages and development of deep aquifers to meet the stipulated irrigation water demand to the extent of 807 billion cubic meters (BCM) in 2050; surface water is stipulated to contribute about 463 BCM and 344 BCM of groundwater. The Ganga River Basin constitutes the main dependable area for food security and therefore, dependence of developing groundwater resources will enhance in case the surface water resources are not available to increase the intensity of irrigation. H. Koide et al. studied the carbon dioxide capacity estimated for deep-saline aquifers and made several assumptions in the calculation of storage capacity based on the idea that the carbon dioxide will be stored by being dissolved in water.